This book consists of the following chapters: early research on hybrid pigeonpea breeding; cytoplasmic-nuclear male-sterility systems; natural out-crossing; isolation distance; seed production of hybrid parents; certified seed production of hybrids; cost of hybrid seed production; general crop management practices; heterosis of yield; prospects for hybrid pigeonpea; training opportunities., This book consists of the following chapters: early research on hybrid pigeonpea breeding; cytoplasmic-nuclear male-sterility systems; natural out-crossing; isolation distance; seed production of hybrid parents; certified seed production of hybrids; cost of hybrid seed production; general crop management practices; heterosis of yield; prospects for hybrid pigeonpea; training opportunities.